Hydrocarbon heating apparatus.



2 SHEETS-SHEET l.

Patented Feb. 25, 1919.

F. M. CAMPBELL. HYDROCARBON HEATING APPARATUS.

APPLICATIQN FILED MAY 4.1917.

FRANK M. CAMPBELL, OF CHICAGO,

ILLINOIS, ASSIGNOR TO THE CAMPBELL GAS HYDROCARBON HEATING APPARATUS.

Specification of Letters Patent.

Application filed May 4, 1917. Serial No. 166,297.

To all whom it may concern:

Be it known that I, FRANK M. CAMPBELL, a citizen of the United States, residing at the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hydrocarbon Heating Apparatus, of which the following is a specification.

My invention relates to apparatus for vaporizin and burning hydrocarbon fuels, and especlally the heavier varieties thereof. It particularly relates to that class of devices which is adapted to be installed in stoves of the ordinary commercial type without material change in structure. It is the object of my invention to provide apparatus of the class described in which full and complete vaporization of the fuel hydrocarbons and also their thorough mixture with the proper proportion of atmospheric air is provided for; I also provide for the complete and even distribution of the mixture throughout the apparatus to the combustion points. It is a further object of my invention to provide a vaporizer which is rapid and thorough in action upon the heavy hydrocarbon oils; in which the deposits of carbon are reduced to the minimum, and space therefor provided in which their presence will not interfere with the ordinary operation of the apparatus; also to provide such a construction that the carbon deposits may be readily and quickly removed at the infrequent intervals which are required.

The principles of my invention are illustrated in the drawings, which show the same as applicable to an ordinary cooking stove or range in which:

Figure 1 is a front view of my improved heating apparatus;

Fig. 2 is an end view thereof, looked at from the right, a portion being broken away, and

Fig. 3 is a view of the same looked at from above.

Fig. 4 is a longitudinal section on the line 4-4 of Fig. 2;

Fig. 5 is a cross section on the line 55 tube and its connections.

Further describing my invention with chamber 5.

wardly slanting bottom 6 and is provided reference to the drawings, 1 represents the walls and principalpart of the body framing of my device as constructed for a plication to and use in an ordinary coolling stove or range. 2 is a mixing tube, extending substantially the entire length of the casing, and having an enlarged or flaring mouth 3 at one end and upwardly recurved at 4 to connect with a gas mixing Such chamber has the upwith the substantially horizontal top 7, in which are a multiplicity of openings 8, through which the thoroughly mixed gases pass to the distributing chamber 9. The top of such distributing chamber consists of a perforated burner plate 10, having a multiplicity of burner openings 11, through which the mixed and distributed gases flow under substantially equal pressure and where they are ignited. The burner chamber 12 is protected by a removable flame plate 13, provided with openings 14. It will be seen that the ignited gases will be thus protected against drafts by which they might be extinguished, and that they are also inclosed, whereby intense heat is communicated to the plate 13.

The construction thus far described relates particularly to the heating of the top and front part of a stove to which my apparatus is applied. Difficulty has heretofore been found in communicating the fire box heat to the oven of the ordinary stove which is placed at the rear and below the fire box. To meet this condition I provide a burner plate 15, at the back of my apparatus in the rear of the mixing tube and below the distributing chamber 9. Such burner plate 15 is inclosed to form an auxiliary gas chamber 16, which communicates by means of the duct 17 with the distributing chamber 9. The flow of gas from the distributing chamber is controlled by the valve shown in Fig. 6. The rotatable closure 20 of said valve is seated in a cylindrical opening in a part of the structure 21, which forms the casing of the valve, and its movement is limited to a quarter turn by the pin 21 which engages a suitably placed stop. A transverse elongated opening 22 passes through the valve closure and controls the flow of mixed combustible gases from the distributing chamber to the chamber 23,

Eatented Feb. 25, 1919.

from which they pass through burner openl ings 24, where they are ignited and are burned to heat the oven and the rear portion of the stove or ran e.

A vaporizing trim 30 extends from end to end of the apparatus, being connected by means of coupling 31, with a source of fluid fuel supply, which should be fed to the apparatus under pressure. The tube or conduit 30 should be of considerable size, both to afford means of ready manipulation and also to resist the high-temperature of the combustion chamber 12, through which it passes. At the same time it is desirable that the available capacity should be considerably reduced, both to minimize the quantity of the fluid contained in it and also for other reasons hereafter to be explained. For this purpose I-fill the-said conduit with a multiplicity of wires 32, which extend from end to end thereof. One end of said vaporizing tube, as shown in Fig. 7, is milled down at 33 to decrease the external diameter, and also provided with external threads at 35 to take the T-coupling 36. Said coupling has an internal diameter considerably in excess of the milled portion of the vaporizing tube 30, thereby providing a considerable free space 37 into which the vaporized hydrocarbons are passed. The end of said T- coupling is closed by a cap 38, extending outwardly to receive the projecting ends 40 of the wires 32. The underside of the outer projection of said coupling is raised at 4:1 to form a slight ridge across the lower port thereof. It will thus be seen that any carbon which may be deposited from the vaporized hydrocarbons will collect in the free space or chamber of the T-coupling and also in the space in the cap 39 wherefrom it may easily be removed also that when the cap is removed the wires whose projecting ends 40 are thus exposed can be readily seized and withdrawn 'so that they may be freed from any carbon deposits which may have been made upon them in the vaporizing tube. The stem 45 of said coupling has a downwardly extended connection at 46, one branch of which terminates in the needle valve 47, controlled by the valve stem 48, so that the flow of gases is in alinement with the axis of the mixing tube 2, which takes a proper proportion of air through the opening 49. The other branch of said coupling 50 is controlled by the valve stem 51, so that before the apparatus is heated a flow of the liquid hydrocarbon may be had from the source of supply through the nozzle 51 into the en 52, in which it may be ignited througi the opening 53 in the face plate 54. Ilpon such heating the fuel oil in the vapor- 1zmg tube is caused to assume the gaseous form and pass through the mixing tube. mixing chamber and distributing chamber to the combustion chamber, whereby the vaporizing tube is still further heated and the operation of the appartus becomes antomatic and continuous;

I claim:

1. In a hydrocarbon heating apparatus having means for vaporizing such hydrocarbons; a mixing tube, a mixing chamber connected with said mixing tube and provided with a top having a multiplicity of perforations, a distributing chamber above said mixing chamber having a burner plate provided with a multiplicity f burner openings and a burner chamber above the distributing chamber provided with a foraminous flame plate.

2. In a hydrocarbon heating apparatus having means for vaporizing such hydrocarbons; a mixing tube, a mixing chamber connected with said mixing tube and provided with a top having a multiplicity of perforations, a distributing chamber above said mixing chamber having a burner plate provided with a multiplicity of burner openings, and a burner chamber above said burner openings within which said hydrocarbon vaporizing means is inclosed.

3. In a hydrocarbon heating apparatus having means for vaporizing such hydrocarbons; a mixing tube extended substan-.

tially the entire length of the apparatus and provided with a recurved end, a mixing chamber connected with the recurved end of said mixing tube and provided with a top having a multiplicity of perforations, a distributing chamber above said mixing chamber having .a burner plate provided with a multiplicity of burner openings, a burner chamber above said burner openings, an auxiliary burner chamber and means for connecting the same to the distributing chamber.

4. In a hydrocarbon heating apparatus having means for vaporizing such hydrocarbons; a mixing tube, a mixing chamber connected with said mixing tube and provided with a top having a multiplicity of perforations, a distributing chamber above said mixing chamber having a burner plate provided with a multiplicity of burner openings, a burner chamber above said burner openings, an auxiliary gas chamber in the rear and below the distributing chamber and provide with a vertical flame plate, and a valve controlled duct to connect said auxiliary gas chamber with said distributing chamber.

5. In a hydrocarbon heating apparatus; the combination of a casing havin a burner chamber, means for conducting hv rocarbons to said chamber, said means including a vaporizer consisting of a metallic conduit extended longitudinally throughout and beyond said chamber, a multiplicity of wires parallel to each other longitudinally disposed within said conduit and means external to the casing for opening the discharge end of said conduit to remove the said wires.

6. In a hydrocarbon heating apparatus; the combination of a casing having a burner chamber, means for conducting hydrocarbons to said chamber, said means including a vaporizer consisting of a metallic conduit extended longitudinally throughout and beyond said chamber, a plurality of wires longitudinally disposed within said conduit, :1 coupling having an enlarged interior portion within which the discharge end of said conduit is axially received, and a removable cap on said coupling to permit the removal of said wires through the coupling.

7. In a hydrocarbon heating apparatus including a burnercham'ber; a vaporizing device including a conduit extended longitudinally throughout and beyond said burner chamber, a multiplicity of wires inclosed in said conduit, a T-coupling to one arm of which said conduit is attached and having an enlarged inner portion Within which the discharge end of said conduit is axially received, and a removable cap on the other end of said T-coupling, whereby the said wires may be withdrawn and carbon deposits removed.

8. In a hydrocarbon heating apparatus including a burner chamber; a device for vaporizing fluid hydrocarbons including a conduit within said burner chamber, a multiplicity of wires longitudinally and removably disposed in said conduit, a T-coupling having one arm attached to said conduit and an enlarged inner portion within which the outlet end of said conduit is received, a removable cap for the other arm of said coupling, a vapor discharge controlling valve, and means for connecting said coupling to said valve.

9. In a hydrocarbon heating apparatus having a burner chamber, a vaporizer having a conduit extended across said burner chamber, a T-coupling having an arm attached to the outlet end of said conduit and having the body portion internally enlarged, a cap for the other end of the coupling device for opening the same and removing the Wires and carbon deposits therethrough, a needle valve connected to said coupling, a mixing tube adapted to receive the vaporized hydrocarbons from said needle valve, and means for connecting the mixing tube with the said burner chamber.

In witness whereof, I have hereunto subscribed my name, this 28th day of April 1917.

FRANK M. CAMPBELL. 

